Block piece for optical lenses



FIG. 1 is a top perspective view of a block piece for optical lenses;

FIG. 2 is a bottom perspective view of the block piece for optical lenses;

FIG. 3 is a front elevational view of the block piece for optical lenses;

FIG. 4 is a rear elevational view of the block piece for optical lenses;

FIG. 5 is a top view of the block piece for optical lenses;

FIG. 6 is a bottom view of the block piece for optical lenses;

FIG. 7 is a left side view of the block piece for optical lenses; and,

FIG. 8 is a right side view of the block piece for optical lenses. 

CLAIM The ornamental design for a block piece for optical lenses, as shown and described. 